MCP7940MT-I/MNY

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MCP7940MT-I/MNY

IC RTC CLK/CALENDAR I2C 8TDFN

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Spécifications

Part Status Active
DigiKey Programmable Not Verified
Type Clock/Calendar
Features Alarm, Leap Year, Square Wave Output, SRAM
Memory Size 64B
Time Format HH:MM:SS (12/24 hr)
Date Format YY-MM-DD-dd
Interface I2C, 2-Wire Serial
Voltage - Supply 1.8V ~ 5.5V
Current - Timekeeping (Max) 1µA @ 5.5V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 8-WFDFN Exposed Pad
Supplier Device Package 8-TDFN (2x3)
Base Product Number MCP7940

Vue d'ensemble

Description

The MCP7940MT-I/MNY is a low-power real-time clock (RTC) integrated circuit (IC) designed by Microchip Technology. It features an I2C interface, making it suitable for use in various applications, including embedded systems, consumer electronics, and industrial devices. Key functionalities include accurate timekeeping, a built-in crystal oscillator, battery backup capabilities, and programmable alarms.
The MCP7940MT-I/MNY offers a wide operating voltage range (1.8V to 5.5V) and supports low current consumption, which is ideal for battery-operated devices. It includes non-volatile memory for storing user data, enhancing its utility in time-stamping and event logging applications. The RTC can maintain timekeeping even during power outages, thanks to its backup battery input.
With features like a temperature-compensated oscillator, it provides excellent accuracy over a range of temperatures. Overall, the MCP7940MT-I/MNY is a versatile and reliable choice for applications requiring precise timekeeping and data retention.

Features

The MCP7940MT-I/MNY is a Real-Time Clock (RTC) with EEPROM from Microchip Technology. Key features include:
1. Timekeeping Accuracy: Maintains time with ±20 ppm accuracy at 25°C.
2. I²C Interface: Communicates via a 2-wire I²C bus, supporting multiple devices.
3. Battery Backup: Operates on a backup battery when the main power is lost, ensuring timekeeping continuity.
4. EEPROM Storage: Includes 64 bytes of non-volatile EEPROM for data storage.
5. Alarm Functionality: Provides multiple alarm features for time-based triggers.
6. Programmable Output: Offers a square wave output, configurable for various frequencies.
7. Temperature Compensated: Designed for operation across a wide temperature range.
8. Low Power Consumption: Suitable for battery-operated applications, with low active and standby current consumption.
Overall, the MCP7940MT-I/MNY is ideal for applications requiring precise timekeeping, data logging, and low power requirements.

Package

The MCP7940MT-I/MNY is packaged in a 14-pin TSSOP (Thin Shrink Small Outline Package).

Pinout

The MCP7940MT-I/MNY is a real-time clock (RTC) integrated circuit with a total of 8 pins. The pin configuration and their respective functions are as follows:
1. VCC (Pin 1): Power supply pin (typically 1.8V to 5.5V).
2. GND (Pin 2): Ground reference pin.
3. SDA (Pin 3): Serial data line for I2C communication.
4. SCL (Pin 4): Serial clock line for I2C communication.
5. SQW/INT (Pin 5): Square wave output or interrupt signal.
6. 32K (Pin 6): Output for a 32.768 kHz clock signal (optional).
7. Vbat (Pin 7): Backup battery input for RTC operation during main power loss.
8. TAMPER (Pin 8): Tamper detection input.
The MCP7940MT-I/MNY is designed for applications requiring timekeeping, with features like battery backup and configurable alarm functions.

Manufacturer

The MCP7940MT-I/MNY is manufactured by Microchip Technology Inc., a leading semiconductor company. Microchip specializes in microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, the company provides a wide range of products and services designed for various applications, including automotive, industrial, consumer, and communication sectors. Microchip is particularly known for its PIC microcontrollers and dsPIC digital signal controllers. The MCP7940MT-I/MNY is a real-time clock (RTC) device that features a programmable alarm and a battery backup for timekeeping, emphasizing reliability and power efficiency in embedded systems.

Application

The MCP7940MT-I/MNY is a real-time clock (RTC) with battery backup, commonly used in applications such as timekeeping in embedded systems, data loggers, industrial automation, consumer electronics, and smart appliances. Its features make it suitable for maintaining accurate time in power-sensitive applications, enabling time-stamped data collection, and synchronizing events in systems requiring precise timing.

Equivalent

The MCP7940MT-I/MNY chip is a real-time clock (RTC) with an I2C interface. Equivalent products include the DS3231, DS1307, and PCF8523. These alternatives also provide RTC functionality but may differ in features like temperature compensation, power consumption, and I2C address. Always check specifications for compatibility with your application.

Expédition

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FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

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